Compression-stop and waste valve.



C. WALKER.

COMPRESSION STOP AND WASTE VALVE.

APPLICATION FILED JAN. 16, 1914.

1,138, l 60. I Patented May 4, 1915.

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COMPRESSION-STOP ANT) WASTE VALVE.

Specification of Letters Patent.

Patented in, a, rare.

Application filed January 16, 1914. Serial No. 812,459.

To all whom it may concern:

Be it known that I, CHARLES WALKER, a citizen of the United States, residing at Knoxville, in the county of Knox and State of Tennessee, have invented new and useful Improvements in Compression-Stop and Waste Valves, of which the following is a specification.

My invention relates to improvements in compression stop and waste valves of the general form shown in my allowed application, SerJNo. 732,100, in which two-valves are mounted upon a common stem and so control the inlet and drainage openings that communication between these openings is not possible, as the waste is being operated. In the waste valve described in my application referred to, a spring acts against the head of the casing and on the main valve to assist in properly seating and holding the valve in seated position while the companion valve is being operated.

In the present invention, I preferably dispense with spring pressure and provide means for accommodating the valve to any seating irregularities, whereby the valve may properly seat and cut on communica tion between the water main and drainage opening. Water pressure in the pipes is usually sutlicient for temporarily holding one valve in seated position while the other is being operated.

In order that theinvention may be readily understood, reference is had to the accompanying drawings which illustrate some of the mechanical expressions embodying the inventive idea, but such drawings are only intended to assist the description of the invention and not to define the limits thereof.

Figure 1 is a longitudinal, vertical crosssectional view of the valve, Fig. 2 is a horizontal section on the line 22 of Fig. 1, Fig. 3 is a central vertical sectional view showing a modification of the main valve, Fig. 1 is a central vertical sectional view showing a second modification ofthe main valve, Fig. 5 being a detail view of parts therein, and Fig. 6 is a central vertical sectional view of a third modification.

Similar characters of referencev designate corresponding parts in the different views.

In Fig. 1 is shown a waste valve in which 1 is acasing having a partition 5 provided with an opening 9 through which water may pass from the inlet to the outlet side of the partition. In line with this partition openmg 9 1s a drain opening 8 and an opening in an extension of the upper wall of the casing 1. The latter opening is closed by a screwplug 4 having an opening for receiving the valve stem 2 which works water-tight through a packing gland 3. The valve stem 2 is provided with a thread 20 along a suitable portion of its length for receiving a collar 15 which is adapted to impart movement'to a reciprocating valve member 11 through jointed or articulated connections consisting, as shown in Fig. 1, of balls 17 resting in recesses formed in opposite sides of ring 15 and held there by screw members 16 which pass through the walls of valve member 11. The outer ends of the screwmembers 16 enter guide slots 16 in the wall of the casingl and prevent rotation of the valve. See Fig. 2. The underside of valve member 11 is provided with a washer 7 adapted to engage the valve seat in partition 5. Leakage between the valve stem 2 and the main valve member 11 is ellected by means of a packing nut 10 which has a threaded engagement with valve member 11. The valve stem is provided with a handle H and a collar 14: which limits the upward movement of the stem and is adapted to be received in and guided by a sleeve 31 on plug 4.-- The lower end of the stem 2 has a ball and socket connection with a valve 6 adapted to open and close drainage opening 8. A second drainage opening 18 for hot water may be provided, and to insure admission of air to the pipe to be drained an air vent opening 8 may be provided above the drainage opening 8, as shown in Fig. 1.

The action of the valve shown in Fig. 1 is as follows :-V\ hen the valve is in wideopen position the main valve 10, 11 will rest against the head of the casing, the waste valve being seated over the drain port with screw pressure; water now flows through the valve and connected pipes in the direction of the arrow. lVhen it is desired to close the valve for drainage, the handle H is turned clockwise when the main valve moves down, seating over the inlet 9; continued turning of the handle results in first seating the main valve firmly before the water pressure upon the waste valve is overcome and the latter and the stem begin to rise; the stem continues to rise until the collar 14 engages the head of the casing when additional 35 a of the collar 15, fit in slotsin the bushmg 25', as shown; evidently, ball bearings may pressureagainst the handle seats the main valve on its seat against screw pressure. To open the valve, the handle is turned in the opposite direction when the stem descends,

fully adjusted spring which is usually employed for the purpose.

Evidently, the collar 15, the threads of which engage threads on the stem, may be connected to the main valve in diflerent ways, so that I do not limit myself to the means herein disclosed of accomplishing this as above indicated. a

One of the several means of connecting the threaded collar l5'to the main'valve is shown in Fig. 3 wherein the valve is constmcted like the one shown in Fig. 1, except the balls 17 are removed, the ends ofthe screws 16. projecting into the recesses in the collar, as-shown. f p

A second modified means of connecting the collar to the main'valve is shown in Figs. 4 and 5, the, latter figure being a detail of parts 15" and 25 ;v lugs 26, on opposite sides be used here, if desired. V V

A third modified means of connecting the collar to the main valve is illustrated m Fig. 6 in which the main valve is shown as consisting of a single ring 11 the v ends of which may carry washers 7, 7 one or both of the washers may fit the'stem water-tight; packing may also be employed; extensions 27 from the collar end in arms which lit in a groove in the main valve, as shown; the stem may be divided at some point 80, if desired. I I

w l/Vhat I claim is 1. A valve casing having a drain port and a valve stem opening in alinement, a partition in said casing having a port alined between said drain port and opening, a longi tudinally movable valve stem extending through said o stem opening and partition port, a valve on said stem controlling said drain port, a collar having a threaded engagement with said stem, a non-rotatable reciprocating valve having an articulated conneotion with said collar and controlling said partition port, means limiting the longitudinal movement of said stem with relation to said casing, and a part of the casing againstwhioh the said non-rotatable valve through said stem" opening and partition port, a valve on said stem controlling said drain port, a non-rotatable reciprocating valve having an articulated connection with said stem and controlling said partition port, means limiting the longitudinal movement of said stem with relation to said casing,

and a part of the casing against which'the said non-rotatable valve abuts; to limit its opening movement whereby both valves may be closed by positive'screw-pressure.

3. In combination, a valve casing having two ports in alinement, a valve stem extend ing through one port and having a valve controlling the other port, a non-rotatable reciprocating valve controlling the second port, and means articulated to said last named valve and engaging said stem for connecting the stem with said valve to actuate the latter, and means in the path of the stem, and valve for enabling either valve tobe moved'to seating position and held seated by screw pressure while the" other valve is open. r In combination, a valve casing having inlet and outlet ports and a drain-port, a partition having a port located between said inlet and outlet ports, a longitudinally movable valve stem extending through said par-' tition port and provided with a valve controlling said drain port, a reciprocating valve actuated by said stem controlling said partition port, said valve having side members to restrain its rotation, a collar having threaded engagement with said stem and,

having articulated connections with said valve, the axis of the connections being in alinement with said side members, and means in the path of said stem and reciproeating valve for enabling either valve to be held seated b-y screw pressure while the other valve is open. W V V I V 5. In combination, a valve easing having a drain port and a valve stem opening provided with a recessed closure therefor, a partition in said casing havinga port, a longitudinally; movable valve stem extending through said closure and partition port, a non-rotatable reciprocating valve having an articulated member threaded to said'stem I either valve may be moved to closed position and held closed by screw pressure while the other is open.

6. A valve casing having a drain port and a valve stem opening in alinement, a partition in said casing having a port alined between said drain port and opening, a longitudinally movable valve stem extending through said stem opening and partition port, a valve on said stem controlling said drain port, a collar having a threaded engagement with said stem, a non-rotatable reciprocating valve having a ball and socket connection with said collar and controlling C'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1 screw-pressure.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES WALKER.

Witnesses:

EDWARD Jonson WHITE, GHAs. WILSON PARKER.

Washington, D. O. 

